1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031a485a705852483bf3f4a4c2aa6442f9ddbbb3d0826beb5ec2959e63b5ad1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1271f175-3c43-4546-9468-42cd9e5b086d.json and https://artists.proofprofile.net/proofs/artist/1271f175-3c43-4546-9468-42cd9e5b086d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7345f387e792b16b5a118d6e9f8d8c990c3772ae2e8f38b17e2ab8303364bb56. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2316278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdefa6285e158fe4714f3e447076954e71b4c18a86eed0fd4f23ebe5e6b3094. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2316285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832f3e275ba5beb006393f5e400515e5004e82dd33e8aabf9074085e36dc0c7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2316286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d91cb2046326f5bde68790065bef83cff0573d7809db4a7f49263bd2cf530. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2316287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ada772327f481ddd65c3e90ad7585eceed9c07a3d4569ff4ba94487a97dea1. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32306660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72d0cc1f98135244a5874830ea21a9c24ed1944128034447afa1335ef40477. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32306661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eff27fedfd6952a193f99d8bf9b8977f128692d8424941e16c260b7ba61a88. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32306662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5a69e45dee19370ada6fdfe7e155297df9c521a6cf692e4cbd095ac0fdcea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32306664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29546048889cfb5d3f68604531b27390beb2f82a3f59166f2c8dc704158dc174. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32306666.
260 Sou servo inúltil, ó Deus piedoso H5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5cea3b7382ae4725e1dafa4a8ff0f9d04f6366fd3cb11e6e6e3a2915129cff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFR2366630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b4f8658d99e827fdfaa7286e85b6bf27058fd07c5d9d53e0746d80f096276. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFR2366631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc1d9e3c0a1fd946878da599b6d8055823aa080f4aa72ad51be429b3745978. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFR2366634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04ad99397657df001f0d67b5b75a525a02f618dc6c2d1a5193fa9cfe86cc66. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d04c649556c8dc37b7e46a2d95ee58264b0a982b969d1b7bc109b73f76f82. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d365423108563b32260971e53f263f573dce4f7b6875c27f7a1c49d6a64a4e2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63df06c7ea3a0b51b5a7c14186b8899225d749b79a8a2068876265c6f1c90c93. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3f62c59ec607dcc9a0f63dda63b46c2f32ce64f2e4a51c6ab930c88b5e2d4e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6f544ba8c89644ccc23d424fcea1bd0a0c565d8e1c3dcf9ad45040fbce3983. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7bee4a91fa3b34228426df7f9402f31f8bdae1740158277b8038f1cf2d4eb7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2425493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278bd5df20a7f068f18126c561fdbdc8cbade8b55f9d37604dab383542d4ad37. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09680ef1394b2826c34896757925fd3b8b6e3b56b2bc048fb797eb223f6a52f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aa8a966065dfb1031a1d51267b79e9cf0e429340e1bd1e52c189fb056f58c9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806df8f0c947289d502bad4c7de6dd07f2915b5548e42753246ef14032524a5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9314b32f9b1003bfd850262745f0370014017d4f516df2948a4a8f0c6503562d. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54706c28065ed11f5231b7ec57be87138b2402d33679536f3db374212ea71d73. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe138f67fb093151f82a2a8ec6b4d61d7fe07182cc619bd5fc228ab6a96eb0efc. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d7266473e7d5d6b3e13c97f3124d4ee9482791cb1b087bc14f6b9e81207b4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b34128119d140e8dde8bdd785a6c2fc3da4121f3cb0cfdc6210139e82353b23. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb42923603cb814ac69067b3c3e4952a05c29e1bc355835977008743e2e5df7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2596226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe725a20920e9d41e282249eb069528a4c9ad37e0b648ac72887f0b3504ad1371. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FD2533030.